290 



Journal of Agricultural Research vol. xix. NO. ? 



1914, first cutting, r = 0.432 0.040, r/E r = 10.7. 

 1914, second cutting, r= -449 .040, r/E r = 11.3. 

 1914, third cutting, r= .31 1 .052, r/E r = 5.99. 



y experimental tract. 



Fto. 6. Diagram showing yield of alfalfa in third cutting, 1914, on the Huntle 

 The yield is expressed in pounds per third plot. 



It will be noted that the results are in very close agreement indeed for 

 1914. The second cutting for 1913 differs significantly from the others, 

 but no explanation can be suggested. 



